Twist lock



FIG. 1 is an isometric view of a twist lock showing my new design;

FIG. 2 is a right side view thereof, the left side view being a mirror image;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear view thereof; and,

FIG. 6 is a front view thereof.

The broken lines depict portions of the twist lock that form no part of the claimed design. 

CLAIM The ornamental design for a twist lock, as shown and described. 